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INDEX.
551
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| Granite Graphic, of Rona | 391 |
| ────────── Hutton's Theory of, objected to | 432 |
| ──── Veins of, at Portsoy, Observations on the | 433 |
| ────────── Contortions of | 439 |
| ──── Tors of, in Cornwall, Remarks on the | 66 |
| Gravel around London, Remarks on the | 231 |
| Graywacke, of the Isle of Man | 39 |
| ─────── of Aberfoyle | 447 |
| ─────── of Clovelly, Contortions in the | 497 |
| ─────── alternating with Clay Slate | 442—447 |
| ─────── Observations on the term | 93—444 |
| Greenstone Porphyry, near St. David's | 86 |
| Greenstone, Observations on the term | 393 |
| Green Sandstone Stratum, in the Isle of Wight | 382 |
| Grey Weathers, Description of the | 224 |
| Gypsum accompanies the Salt Springs at Droitwich | 95 |
| ────── of the Isle of Purbeck | 166 |
| ────── of Newhaven, in Sussex | 191 |
| ────── of the Paris Basin | 214 |
| Hall, sir James, Observations on his Experiments on the Action of Heat modified by Compression, on Vegetable Matter | 20 |
| Hampstead Heath, Sand of | 224 |
| Headon Hill, Isle of Wight, Description of | 184 |
| Heat, modified by Compression, its Action on Vegetable Matter | 21 |
| ──── Effect of, on the Rocks at the Vitrified Fort of Dun Mac Sniochain | 266 |
| Heliotrope of the Island of Rum | 408 |
| Herland Copper Mine, Description of | 146 |
| ───────────── North, Description of | 149 |
| Hertfordshire Pudding Stone, Description of the | 225 |
| Highgate Hill, Account of the Strata of | 197 |
| Hippurites, Observations on some Specimens of | 277 |
| Hogs-Back, near Guildford, Description of the Chalk of the | 172 |
| Hordwell Cliffs, Fossils of | 189 |
| Horner, Mr. L. Account of the Brine Springs at Droitwich | 94 |
| Hornblende and Felspar, Rocks near St. David's composed of, and peculiarity of their Structure | 80—83—89 |
